What is the step-up in search fund investing?

The step-up gives search capital investors a 1.5x credit: for every $1 invested during the search phase, the investor receives $1.50 worth of equity at the acquisition. This compensates for the risk that the search may not result in a completed acquisition (33% of searches end without a deal).

How much do you need to invest in a search fund?

Search capital commitments are typically $25K-$50K per investor. If the searcher completes an acquisition, investors have the right to invest additional acquisition equity (typically $100K-$1M+ per investor depending on deal size). Total commitment per fund: $125K-$1M+ across both stages.

Search Fund Investor Economics: Step-Up, Carried Interest & Returns

15 min read

Search fund investing is one of the most attractive alternative asset classes for accredited investors, with median returns of 35% IRR and 5.5x MOIC according to Stanford data. But the economics work differently from private equity, venture capital, or other fund structures. This guide explains the investor’s perspective: how capital is deployed, the step-up mechanism, equity alignment, and how returns are generated.

Two stages of capital commitment

Search fund investing involves two distinct capital commitments:

Stage 1: Search capital

Amount per investor: $25K-$50K (typically 5% of total search capital)
Total raised: $400K-$600K from 10-20 investors
Purpose: Fund the searcher’s salary, travel, legal, and operating expenses during the 18-24 month search
Risk: If no acquisition is completed, this capital is partially or fully lost (search expenses are sunk costs)
Structure: Convertible note or preferred equity that converts at acquisition

Stage 2: Acquisition capital

Amount per investor: $100K-$1M+ (depends on deal size and investor allocation)
Total equity raised: $2M-$10M+ (equity component of the acquisition)
Purpose: Fund the equity portion of the business acquisition
Right, not obligation: Search investors have the right to invest pro-rata in the acquisition, but they can pass

The step-up mechanism

The step-up is the defining economic feature of search fund investing. Search capital investors receive preferential terms when the acquisition is made:

Standard step-up: 1.5x - for every $1 of search capital invested, the investor gets $1.50 worth of equity in the acquisition
Example: An investor who committed $50K in search capital receives $75K worth of acquisition equity at the acquisition price
Rationale: Compensates search investors for the risk of the search phase (where capital can be lost if no deal closes)
Pro-rata participation: Search investors typically get the right to invest their pro-rata share (and sometimes more) in the acquisition equity

Step-up variations

1.5x standard: Most common in traditional US search funds
2.0x: Sometimes used for riskier searches or to compensate for longer search periods
1.0x (no step-up): Occasionally used in European or non-traditional structures
Conversion cap: Some structures cap the step-up at a maximum equity percentage

Equity allocation at acquisition

At the time of acquisition, the equity is typically allocated:

Searcher/CEO: 20-25% (vesting over 4-5 years)
Search investors (with step-up): Their converted search capital + pro-rata acquisition equity
Acquisition-only investors: New investors who participate only at the acquisition stage (no step-up)

See our cap tables & equity guide for detailed mechanics and numerical examples.

How returns are generated

Value creation levers

Revenue growth: The CEO grows the business organically through sales, marketing, and customer expansion
Margin improvement: Operational improvements, pricing optimization, cost reduction
Multiple expansion: A professionally managed, larger business commands a higher EBITDA multiple at exit than at purchase
Debt paydown: Cash flow is used to pay down acquisition debt, increasing equity value
Add-on acquisitions: Bolt-on businesses acquired at lower multiples than the platform

Return example

A simplified example with a $15M acquisition at 5x EBITDA:

EBITDA at acquisition: $3M
Purchase price: $15M (5x)
Equity: $5M (33%)
Debt: $10M (67%)
After 5 years: EBITDA grows to $5M
Exit at 6.5x = $32.5M enterprise value
Debt remaining: $6M (after paydown)
Equity value: $26.5M (from $5M invested)
MOIC: 5.3x / IRR: ~40%

Comparison to other asset classes

vs. Private equity: Search funds generate higher IRRs (35% vs. 15-20%) but smaller absolute dollar returns per investment. PE offers more diversification and liquidity
vs. Venture capital: Search funds have lower variance (fewer zeros, fewer 100x returns). More consistent cash-flow-based returns vs. VC’s power-law distribution
vs. Real estate: Higher returns but illiquid, concentrated, and manager-dependent. No passive income during the operating period

Portfolio construction

Typical allocation: Experienced search fund investors back 10-30+ searchers to build a diversified portfolio
Search capital at risk: $250K-$1.5M across the portfolio (search capital that may be lost if searchers don’t acquire)
Acquisition capital reserved: $1M-$10M+ for follow-on investment in the ~67% of searches that complete acquisitions
Expected losses: 33% of search investments result in total loss (searcher doesn’t acquire). Another ~15-20% of acquisitions underperform
Winners pay for losers: The portfolio model works because the top-quartile performers generate 10x+ returns, more than compensating for losses

Key investor considerations

Illiquidity: Capital is locked up for 7-10 years with no secondary market
Manager risk: Each investment is a bet on a single CEO. The searcher’s quality is the #1 determinant of returns
Minimum ticket size: Typically $25K-$50K per search (search capital) + $100K+ per acquisition (equity capital)
Accredited investor: Most search fund investments require accredited investor status under SEC rules
Time commitment: Active investors serve on boards (3-5 hours/month per company) and provide mentorship

For more on the investor perspective, see why invest in search funds and our search fund statistics overview.

Frequently asked questions

What is the expected return on search fund investments?

According to the Stanford GSB 2024 Search Fund Study, the asset class has generated median returns of approximately 35% IRR and 5.5x MOIC across all completed acquisitions. However, returns are highly skewed: the top quartile of acquisitions generates 10x+ returns, while approximately 33% of search investments result in total loss (the searcher never closes an acquisition). Among completed acquisitions, roughly 15-20% underperform the invested capital. Experienced search fund investors build diversified portfolios of 10-30+ search commitments to smooth out these outcomes, with portfolio-level returns typically ranging from 25-40% IRR depending on vintage and manager selection quality.

How does the 1.5x step-up work in practice?

The step-up compensates early-stage search capital investors for the higher risk they bear during the unfunded search phase. For every $1 invested as search capital, the investor receives $1.50 worth of equity at the acquisition-stage valuation. For example, an investor who commits $50K in search capital receives $75K worth of acquisition equity, a 50% premium. According to IESE Business School’s research on European search funds, the 1.5x step-up has become the global standard, though some European funds use a 1.0x structure (no step-up) to simplify the cap table. The step-up is economically justified because approximately one-third of funded searches never complete an acquisition, making search capital a high-risk investment with binary outcomes at the individual deal level.

How many search funds should an investor back to build a diversified portfolio?

Stanford GSB research suggests that backing 10-15 search funds provides meaningful diversification, with portfolios of 20+ commitments approaching optimal risk-adjusted returns. At $25K-$50K per search commitment, this requires $250K-$1M in search capital alone, plus $1M-$10M+ reserved for follow-on acquisition equity in the approximately two-thirds of searches that complete acquisitions. The portfolio model works because top-performing acquisitions generate 10x-30x returns, which more than compensate for the 33% total loss rate on unfunded searches and the 15-20% of completed acquisitions that underperform. Investors with fewer than 10 commitments face significant single-manager risk and may experience highly variable outcomes.

Sources

Stanford Graduate School of Business — Search Fund Study: Selected Observations, 2024 edition. Thorough return data, step-up mechanics, and portfolio construction analysis across 500+ search funds.
IESE Business School — International Search Fund Study, 2024. European search fund economics, structural variations, and cross-border return comparisons.
Harvard Business School — Search Funds: An Overview of the Asset Class, HBS Case Study. Academic analysis of investor economics, portfolio theory, and risk-return characteristics of search fund investing.